Interestingly, both games are rematches. The Patriots beat the Chiefs 43-40 in Week Six of the NFL schedule at home, handing Kansas City its first loss of the season. The host Saints, who topped the NFL standings at 13-3, outscored the visiting Rams 45-35 in Week Nine, handing the Rams their first loss of the season.

Let's look at how the NFL odds of both games stack up, based on the lines being offered by Bovada.

New England Patriots (+120) at Kansas City Chiefs (-140)

On the surface, the AFC Championship Game looks to be a mismatch. The Patriots have won three of the last four AFC title games. Patriots quarterback Tom Brady owns five Super Bowl rings and eight AFC titles. He's 5-1 in the AFC Championship Games when facing a team he beat in the regular season. But New England hasn't won a road playoff game since 2006 and Brady is just 2-3 on the road in the AFC Championship Games. New England also opens as a three-point underdog, the first time the Patriots haven't been favored in any game since 2016.

By contrast, Chiefs QB Patrick Mahomes will be making his second career NFL playoff start, although he is 1-0 in the postseason. The Chiefs are 8-1 at home this season, but the last time they won the AFC title, it was still the AFL. Kansas City beat the Oakland Raiders 17-7 on Jan. 4, 1970 in the AFL Championship Game, the last game played in AFL history. The AFL and NFL merged the following season. The Chiefs are 0-1 in AFC Championship Games.

Los Angeles Rams (+150) at New Orleans Saints (-170)

The Saints, who are the Super Bowl 53 betting favorites, handled the Rams at home during the regular season and New Orleans has won seven straight home playoff games, unbeaten in the postseason at the Mercedes-Benz Superdome since 1992. That includes a 1-0 slate in NFC Championship Games. The Saints are also 1-0 against the Rams in the playoffs. Drew Brees is 8-5 in the postseason as Saints QB and 6-0 at home. Since New Orleans is playing host to the Super Bowl, the Saints could become the first team to play a Super Bowl game in their home stadium.

The Rams are much less experienced in playoff football and they are 1-4 all-time on the road in NFC Championship Games. Both L.A. running backs - Todd Gurley and C.J. Anderson - topped 100 yards rushing in the Rams' divisional round win over the Dallas Cowboys. QB Jared Goff has been underwhelming in recent weeks, so they will need a big running game and for DT Aaron Donald, who led the NFL with 20.5 sacks, to get relentless pressure on Brees.